NOMELON NOLEMON is a music unit consisting of composer "Tsumiki" and vocalist "mikimaria." The duo was formed on August 11, 2021, when Tsumiki announced their debut on his birthday. Their first release, the song "INAZMA," was broadcast on Nippon Broadcasting's "YOASOBI's All Night Nippon X" and subsequently released digitally across various platforms. In November 2021, they released their second single, "Yellow" and announced their first full album, POP set for release in January 2022. The album featured the track "syrup" which was pre-released on January 11, 2022, along with the music video for "rem swimming" on the day of the album's launch. Throughout 2022, NOMELON NOLEMON continued to gain traction with the release of several music videos, including those for "night draw" and their third single, "Touch"(2022) which was used as an insert song in the film Violence Action. The duo also released their first EP, Kankakuha on September 14, 2022, which included the track "SUGAR" as a pre-release collaboration with the energy drink ZONe. The music video for another EP track, "Senkoukingyo" was published on October 30, 2022. They released "Midnight Reflection" on January 2025.